text: from flask import Flask, Response, send_from_directory, request
  import qrcode
  from qrcode.image.svg import SvgPathImage
  import subprocess
  import io
  import os
  app = Flask(__name__, static_folder='www')
  
  @app.route('/')
  def root():
      return send_from_directory('www', 'index.html')
  
  @app.route('/request')
  def vcRequest():
      request=subprocess.run('node dist/createrequest.js', capture_output=True, cwd='./sdk')
      if request.returncode == 0:
          print('successful request generated')
          return Response(request.stdout, status=200)
      else:
          print('unsuccessful request generation')
          print(request.stderr)
          return Response(status=500)
  
  @app.route("/qr")
  def qr():
      host = 'localhost'
      if host in os.environ:
          host = os.environ['host']
      url = 'openid://vc/?request_uri={0}/request'.format(host)
      f = io.BytesIO()
      factory = SvgPathImage
      qrcode.make(url, image_factory=factory, ).save(f)
      return Response(f.getvalue(), mimetype='image/svg+xml')